Samsung DMT300 Series Service Manual page 45

Error type Error mode
Power Relay None
error
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Checking Method
1) Check the connections for the Power Relay connector
: Start the cycle by pressing the Power key.
Then measure the operating voltage between the black wires of the
Heater Relay, and the operating voltage between the yellow and amber
wires of the Power Relay.
CAUTION
Check the color of the wires of the Power Relay and the Heater Relay.
• Normal: 120V
2) Check the door switch.
: Check the white wire and the switch connected to the white wire.
• When the door is open
: The Door Switch is OFF.
• When the door is closed
: The Door Switch is ON.
NOTE
The Power Relay and the Heater Relay use a 12V line. If the switch is out of
order, the Power Relay and the Heater Relay will not operate.
Corrective actions
Reconnect the Power Relay.
•
P owe r Re la y Te rmina l He a te r Re la y Te rmina l
Ye llow wire + Ambe r wire ) (Bla ck wire + Bla ck wire )
Faulty: Replace the Door Switch.
•
4. Troubleshooting
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